Update backend-dev to use the same copy mechanism as backend.

docker/backend-dev/Dockerfile

@@ -18,37 +18,57 @@ RUN apk add alpine-sdk imagemagick6 imagemagick6-dev graphviz graphviz-dev tesse
 # As of Alpine 3.7, zbar is only available in testing.
 RUN apk add imagemagick@edge zbar@testing zbar-dev@testing
 
+WORKDIR /tmp
+
 # Dependency of libapreq2-2.13, which is not installed automatically.
-RUN cpm install ExtUtils::XSBuilder::ParseSource -g
+RUN cpm install ExtUtils::XSBuilder::ParseSource
 
 # Builder image stage
 ARG BRANCH
 ADD https://raw.githubusercontent.com/openfoodfacts/openfoodfacts-server/${BRANCH}/cpanfile /tmp/cpanfile-git
 
 # Add ProductOpener runtime dependencies from the git repositories' cpanfile (speeds up builds if stuff up to here has not changed)
-RUN cpm install -g --cpanfile=/tmp/cpanfile-git
+RUN cpm install --cpanfile=/tmp/cpanfile-git
 
 # Install cpanfile from the workdir.
 ADD ./cpanfile "/tmp/cpanfile-workdir"
 
 # Add ProductOpener runtime dependencies from the local cpanfile
-RUN cpm install -g --cpanfile=/tmp/cpanfile-workdir
+RUN cpm install --cpanfile=/tmp/cpanfile-workdir
 
 FROM hangy/httpd-alpine-perl-modperl
 
+# Remove APK cache
+RUN set -x \
+    && rm -rf /var/cache/apk/* \
+    && rm -rf /tmp/*
+
+# As of Alpine 3.7, zbar is only available in testing.
+RUN echo -e '@edge http://dl-cdn.alpinelinux.org/alpine/edge/main\n@edgecommunity http://dl-cdn.alpinelinux.org/alpine/edge/community\n@testing http://dl-cdn.alpinelinux.org/alpine/edge/testing' >> /etc/apk/repositories
+
+# Update alpine package index
+RUN apk update
+
+RUN apk add imagemagick6 graphviz tesseract-ocr geoip \
+    && /etc/periodic/monthly/geoip \
+    && ln -s /usr/share/GeoIP /usr/local/share/GeoIP
+
+# As of Alpine 3.7, zbar is only available in testing.
+RUN apk add imagemagick@edge zbar@testing
+
 # Prepare Apache to include our custom config
 RUN set -x \
     && mkdir -p /usr/local/apache2/conf/sites-enabled \
     && echo 'IncludeOptional conf/sites-enabled/*.conf' >> /usr/local/apache2/conf/httpd.conf
 
-# Get GeoIP data
-COPY --from=builder /usr/share/GeoIP /usr/share/GeoIP
-RUN ln -s /usr/share/GeoIP /usr/local/share/GeoIP
-
-# Copy Perl binaries and libraries from the builder image
-COPY --from=builder /usr/local/bin/ /usr/local/bin/
-COPY --from=builder /usr/local/share/perl5/site_perl/ /usr/local/share/perl5/site_perl/
-
 # Install Product Opener from the workdir
 ADD . "/opt/product-opener/"
 WORKDIR "/opt/product-opener"
+
+# Copy Perl libraries from the builder image
+COPY --from=builder /tmp/local/ /opt/product-opener/local/
+
+# Remove APK cache
+RUN set -x \
+    && rm -rf /var/cache/apk/* \
+    && rm -rf /tmp/*